May weather forecastKumamoto, Japan
May
Weather in May
May in Kumamoto experiences a considerable jump in temperature reaching a high of 23.2°C (73.8°F) and going down to 14.3°C (57.7°F). With summer knocking at the doorstep, the city feels the warmth in the air. More hours under the sun add to the prevailing warmth and while rain does arrive, it's minimal and fails to bring much cooling. Expect a steady rise in humidity and a spike in the city's UV index tally. As May gives way to June, anticipate higher temperature readings and frequent showers.Temperature
May sees a marginal temperature increase, moving from an enjoyable 18.3°C (64.9°F) in April to a moderately hot 23.2°C (73.8°F). Throughout May, Kumamoto witnesses a nighttime temperature average of 14.3°C (57.7°F).Humidity
The average relative humidity in May in Kumamoto is 73%.Rainfall
In Kumamoto, Japan, in May, it is raining for 12 days, with typically 78mm (3.07") of accumulated precipitation. In Kumamoto, during the entire year, the rain falls for 179.9 days and collects up to 1028mm (40.47") of precipitation.Snowfall
In Kumamoto, snow does not fall in April through November.Sea temperature
In Kumamoto, Japan, the average seawater temperature in May is 21°C (69.8°F).Note: Most people do not find swimming enjoyable in water of 21°C (69.8°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
In May, the average length of the day in Kumamoto is 13h and 51min.On the first day of May in Kumamoto, sunrise is at 05:29 and sunset at 18:58. On the last day of the month, sunrise is at 05:10 and sunset at 19:19 JST.
Sunshine
In Kumamoto, Japan, the average sunshine in May is 9.5h.UV index
The average daily maximum UV index in May in Kumamoto is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Kumamoto, Japan
- Average high temperature in May: 23.2°C
The warmest month (with the highest average high temperature) is August (30.4°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in May: 14.3°C
The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).
Average pressure in May
Kumamoto, Japan
- Average pressure in May: 1012.1mbar
The month with the highest atmospheric pressure is January (1021.8mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in May
Kumamoto, Japan
- Average wind speed in May: 7.2km/h
The windiest month (with the highest average wind speed) is March (8.7km/h).
The calmest month (with the lowest average wind speed) is June (7km/h).
Average humidity in May
Kumamoto, Japan
- Average humidity in May: 73%
The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are March and April (72%).
Average rainfall in May
Kumamoto, Japan
- Average rainfall in May: 78mm
The wettest month (with the highest rainfall) is June (216mm).
The driest month (with the least rainfall) is January (36mm).
Average rainfall days in May
Kumamoto, Japan
- Average rainfall days in May: 12 days
The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is January (10.5 days).
Average snowfall in May
Kumamoto, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Kumamoto, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Kumamoto, Japan
- Average sea temperature in May: 21°C
The best month for swimming (with the highest average sea temperature) is August (28°C).
The coldest months (with the lowest average sea temperature) are February and March (18°C).
Average daylight in May /
Average sunshine in May
Kumamoto, Japan
- Average daylight in May: 13h and 48min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 9h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
Kumamoto, Japan
- Average sunshine days in May: 17 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is July (4.9 days).
Average UV index in May
Kumamoto, Japan
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Kumamoto, Japan
- Average cloud cover in May: 35
The month with the most cloud cover is June (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in May
Kumamoto, Japan
- Average visibility in May: 9km
The month with the highest visibility is November (10km).
The months with the lowest visibility are June and July (8km).
